Home / 30,879-66,654

Finding the Third Proportional to 30,879 and 66,654

Calculator

Solution

The third proportional to 30,879 and 66,654 is: 143,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879 : 66,654 = 66,654 : x
  2. Step 2: Convert to fraction form
    30,879/66,654 = 66,654/x
  3. Step 3: Cross multiply
    30,879x = 66,654 × 66,654
  4. Step 4: Simplify right side
    30,879x = 4,442,755,716
  5. Step 5: Solve for x
    x = 4,442,755,716/30,879
  6. Step 6: Final answer
    x = 143,876.28

Related Problems

Find third proportional to 15,439.50 and 33,327
Half scale
Find third proportional to 61,758 and 133,308
Double scale
Find third proportional to 30,881 and 66,658
Similar ratio
Find third proportional to 46,318.50 and 99,981
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.